Shade roller



Aug. 16, 1932. B, S H T 1,872,188

SHADE ROLLER Filed May 25, 1932 INVENTOR Benm'gchwar/z ATTORNEY PatentedAug. 16, 1932 UNITED AT PATENT OFFICE IBENNIE SCHWARTZ, on BROOKLYN, NEWYon]:

SHADE Application filed. May 25,

The invention is a shade roller in which means is provided forpreventing the comshade roller in which means is provided for Jpreventing the spring unwinding beyond the point at which it hassuflicient the shade.

Another object of the invention isto provide in, a shade roller meansfor limiting the rotating movement oi' the spring core when the springis unwinding. i

Another object of the inventionris'to provide a shade roller in whichtheroller may tension to roll only rotate to roll up the shade exactly thesame number of turns ithas rotated to roll the shade down.

Another object of the invention is to provide a travelling member in ashade roller which will engage a stop to prevent the spring core androller unwinding beyond a predetermined distance. V p g Arfurther objectof the invention isto provide a device that may be installed upon theinterior of ashade roller for preventing the roller completely unwindingwhichmay be tcll d' ai-t e f hade oller ortina ms 1 e 1m 1y yp 0 S r oneend in which the spring 2 is mounted spring roller that maybe used forany other purpose. I p I And a still further object'of the invention isto provide means for limiting the movement of a shade roller to preventthe complete unwindingof thespring which is of a simple and economicalconstruction.

I threaded'rodinside of .the spring and a nut on the threaded rod withmeans for preventing the nut rotating with the rod, and means at theends for limiting the travel of the nut on the rod.

Other features and advantages ot-the invention will appear from thefollowing de scription taken in connection with the draw- 'ing, whereinmg the core of the spring.

"the spring is'held' in a slot oropening- ROLLER 1932. Serial No.613,386.

a Figure 1' is a view showing a-shade roller with-the deviceincorporated therein.

Figure 2 is a View showing a portion of a shade roller with part brokenaway showing the spring.

Figure 3 is a cross section thru the spring with the rolleromittedytaken on line 3-3 of 'Figure 2'. A i

Figure 4 is a longitudinal section thru the end of the roller with thewood portion of the do roller indicated in dotted lines. Figure 5 is'anend View of the roller. Figure6 is a section similar to that shown inFigure 3 in which a nut of an alternate, design is shown; V Figure 7 isa similar section showing a1- te'rnate meansffor preventing the nutrotat ing:

Inthedrawing the device is shown as it would be made wherein numeral"lindicates o a shade roller, numeral 2 a shade roller spring, and numeral3 a threaded rod form- It will be understood that a shade roller of anytype or design may be used and the 7 roller may be made of wood, metal,or of "any material. The-spring roller'may also 1 beused for windowshades, awningsyblinds, curtains',"or for any other purpose. In the fdesign shown the roller is made of wood and go is provided with acylindrical opening 4 in shaped disc 5 and it will be noted that oneend'ofthe springQ. is attached to a projec- 35 tion 6 on the disc 5 andtheopposite end of 7 in the rod 8. It will be understood that the springmay also be held to the end of the rod 3'by any other means. The disc 5may 'be' attached to the end of'the roller 1 by points 8, or heldthereto by any other means. It will be notedthat the usual flat shank orpintle, as indicated by the numeral 9,'is provided at the end of the rod8 and this may be made integral with the rod or attached to it in anymanner. With the shank 9 held in a socket at the edge of a window frameWard it will wind the spring so that when the shade is released thespring will draw the shade upward. The shade may be held at any'positionby the usual dogs 11 operating in recesses 12 in a disc 13 at the end ofthe shank 9.

In an ordinary window shade the rod 3is not threadedand when the shade10 is re leased it is free to run up to the top of the window and veryoften the spring continues to unwind so that the tension onthe spring isreleased and the spring is not sufficient to raise the shade all the wayto the top ofthe window. In order to prevent this the rod 3 is threadedand a threaded nut14 placed on the rod and held'in asleeve 15 so thatwhen the shade is pulled downward thenut 14 will travel on the rod 3andwhen the shade is released and raised the nut.14 willtravel back tothe starting position. VVhen'installing the deviceit is so arranged thatthe nut 14may rest against the end of a bearing 16 at one end of the rod3, or with opposite hand threads the nut 14 may rest against an end of abearing 17 at the opposite end of the sleeve. NVit-h the nut in thisposition and the spring slightly wound or wound sufficiently to producetension'to raise the sion, the shade may be drawn downward and as it isdrawn downward the nut14-will travel on the threads on the rod 3away-from the bearing, the end of which forms the stop, and when theshade is raised'the nut 'will' travel back the same distance it movedwhen the shade was I drawn downward, thereby permitting the rod 3 tomake exact ly the same number of turnsas the shade is raised, that itmade in the opposite direction, when the shade was lowered, and as thenut will strike the end of a bearing it will prevent the rod turningfurther, or the roller running free, or the shadecontinuing rto rotateon the roller after it has reached the top. It will be noted thatwhenever the shade is released it can only unwind until the end of thenut engages one of the limiting steps or ends of the bearings which willtherefore make it possible to maintain-the adjusted tension in thespring atall times and also make it impossible for the spring tocompletely unwind. The roller will otherwise operate in a manner similarto that of the ordinary shade roller.

It will be understood that thenut 14 may" be of any shape or design andthe sleeve 15 may also be of any shape so that it will correspond withthe nut and prevent the nut rotating as it travels on the rod 3. In thedesign shown in Figure 6 the nut, which is indicated by the numeral 18,and also the sleeve, which is indicated by thenumeral 19, .are both madeof an elliptical shape, however, it is understood that they maybe. madeof anyother shape. tIngthe design shown .the disc. tral ,part of thedisc 5 is stamped mward :ner desired and-these may be held in the disc5, as shown at the points 23, in Figure 4. *It'will be understood,however, that this sleeve may be held to the disc in any other manner'or may be attached to the roller in any manner as long as it-isstationary with It will also be noted thatthe cenforming the bearing 16to hold the end of the .rod- 3 and it will be understood that thishearing may also be formed in any other manner,

and at the opposite end of the rod where the rod is held in the bearing17 of the sleeve 15 the rod is turned downward to'the root of l thethreads thereby providing a smooth bearing, however it will beunderstood that this bearing may be formed in any other manner,

. and also that the hearing may be omitted. shade, which is known as theadjustedten- It will be .understood that other changes may be made inthe construction without departing from the spirit of the invention. Oneof which changes may be in the use of any other means for mounting andholding the nut 14 or the travelling member in a shade roller, anothermay be in the use of other means for causing a nut or; travelling memberto move as theshade is pulled downward or as it is pulled upward, andstill another chan e may be in the use of other means for limiting themovement of the said travelling member.

The construction will be readily understood from the foregoingdescription. In use the-device may be provided as shown andinstalledcinv a shade, or other spring roller of any type or descriptionand it will be noted that the shade may be pulled downward in the usualmanner without any interference whatever from the travelling'member 14,and also that .the shade may be raised by the spring-and as long as itoperates in the same manner as the spring rollers now in use, thisdevice will not interfere with the operation, however, when a shade isunintentionally released this device will come into action and preventthe spring unwinding beyond the adjusted tension, thereby eliminatingthe trouble and inconvenience of taking down the spring rollerand-rewinding the spring, and

1. In a shade roller, a spring, and a travelling member within saidspring, and means limiting the movement of the travelling member toprevent complete unwinding of said spring.

2. In a shade roller, a spring, a threaded core in said spring, a nut onsaid threaded core, means causing the nut to rotate on the core, saidnut and means causing the rotation thereof, positioned within saidspring, and means limiting the movement of said nut to prevent completeunwinding of said spring.

3. In an attachment for shade rollers, a spring for winding said roller,and means within said spring preventing complete unwinding of saidspring.

4. In an attachment for shade rollers, a spring adapted to be insertedin the end of the roller, a threaded core in said spring, a travellingmember on said threaded core and within said spring, and rotatable meansholding said travelling member causing its rotation on said core. I

5. In an attachment for shade rollers, a spring adapted to be insertedin the endof the roller for rewinding the roller, and a travellingmember inside of said spring to prevent complete unwinding thereof.

6. In an attachment for shade rollers, a

spring for rewinding said roller, a travelling member inside of saidspring, means causing said travelling member to move in one direction asa shade on the roller is drawn downward, and means preventing saidtravelling member moving beyond the starting point when the shade movesupward or travels in the opposite direction.

In testimony whereof I afiix my signature.

BENNIE SCHWARTZ.

